Consider the following reaction:2 H 2 O 2 (aq) → 2 H 2 O (l) + O 2 (g) Calculate the rate of the reaction between 25 sec and 65 sec.

Consider the FOMO reaction where we have 2 moles of hydrogen peroxide decomposing to give us 2 moles of liquid water, plus 1 mole of oxygen gas. Calculate the rate of reaction between 25 seconds 65 seconds. Alright. So if we take a look here at this chart, it's in reference to water. So what they're really asking us to determine is the rate of appearance of water over time. So since it's a product, it's increasing, so it's positive, change in water over, now the coefficient is a 2, so 2 times change in time. So here they want us to look at 25 seconds and 65 seconds. So we're looking here and here. So remember change in concentration is final minus initial, so 65 seconds is our final amount of time, so the concentration there is 2.02 molar minus my initial, since we're starting at 25 seconds, it's initially 1.30 molar at that time, divided by 60 oh, divided by 2 times 65 seconds minus 25 seconds. Because remember, it's final minus initial. When we plug that in, we get 0.0090 molarities per second. So this represents the rate of formation or appearance of water over time. So this would be our final answer.

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15. Chemical Kinetics

Average Rate of Reaction

General Chemistry

15. Chemical Kinetics

Average Rate of Reaction

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Multiple Choice

Consider the following reaction:2 H₂O₂ (aq) → 2 H₂O (l) + O₂ (g)
Calculate the rate of the reaction between 25 sec and 65 sec.

0.018 M/s

9.0×10^–3 M/s

0.036 M/s

0.041 M/s

0.083 M/s

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Verified step by step guidance

Identify the time interval for which the rate of reaction needs to be calculated: between 25 sec and 65 sec.

Determine the change in concentration of H2O over the given time interval. From the table, at 25 sec, [H2O] = 1.30 M and at 65 sec, [H2O] = 2.02 M.

Calculate the change in concentration of H2O, Δ[H2O] = [H2O] at 65 sec - [H2O] at 25 sec.

Determine the change in time, Δt = 65 sec - 25 sec.

Calculate the rate of reaction using the formula: Rate = Δ[H2O] / Δt. This will give you the average rate of formation of H2O over the specified time interval.